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https://www.readbyqxmd.com/read/28092299/the-complex-phenotype-of-the-athletes-heart-implications-for-pre-participation-screening
#1
Benjamin Brown, Daniel J Green, Matthew Wilson, Jonathan Drezner, Keith George, David Oxborough
Pre-participation screening is vital to exclude inherited cardiac conditions which have the potential to cause sudden cardiac death in seemingly healthy athletes. Recent research has questioned traditional theories of load-induced, dichotomous cardiac adaptation. We therefore considered whether a "one-size-fits-all" approach to screening can account for inter-individual differences brought about by sporting discipline, training volume, ethnicity, body size, sex and age.
January 13, 2017: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/28091446/correlation-between-athlete-training-intensity-and-cardiac-performance
#2
T Xiao, Y Zhang
OBJECTIVE: An effective analysis of correlation between training intensity of athletes and cardiac performance is done to develop scientific and reasonable exercise program and to promote health of athletes. METHODS: During December 2013-December 2015, 3600 students from different sports schools were selected for the test. All the athletes were randomly grouped, that is half-hour running group, one-hour running group and 90 -minute running group, which are named A, B, C groups respectively...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28090147/regression-shrinkage-and-neural-models-in-predicting-the-results-of-400-metres-hurdles-races
#3
K Przednowek, J Iskra, A Maszczyk, M Nawrocka
This study presents the application of regression shrinkage and artificial neural networks in predicting the results of 400-metres hurdles races. The regression models predict the results for suggested training loads in the selected three-month training period. The material of the research was based on training data of 21 Polish hurdlers from the Polish National Athletics Team Association. The athletes were characterized by a high level of performance. To assess the predictive ability of the constructed models a method of leave-one-out cross-validation was used...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28081034/the-effects-of-the-removal-of-electronic-devices-for-48-hours-on-sleep-in-elite-judo-athletes
#4
Ian C Dunican, David T Martin, Shona L Halson, Reid Reale, Brian Dawson, John Caldwell, Maddison J Jones, Peter R Eastwood
OBJECTIVE: This study examined the effects of the removal of electronic devices (i.e., smartphones, etc.) for 48 hours on sleep quality and next-day athletic and cognitive performance in elite Judo athletes. PARTICIPANTS: Over 6 days and nights, 23 eliteAustralian Judo athletes were monitored while attending a camp at the Australian Institute of Sport (AIS). In 14 athletes all electronic devices were removed on days 3 & 4 (i.e. for 48 hours: the 'device-restricted group') while 9 were permitted to use their devices throughout the camp (the 'control group')...
January 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28081033/performance-aspects-and-physiological-responses-in-male-amateur-boxing-competitions-a-brief-review
#5
Maamer Slimani, Helmi Chaabène, Philip Davis, Emerson Franchini, Karim Chamari
Boxing is one of the most popular striking combat sports in the world. The aim of this review was to present data concerning performance analysis (time-motion and technical/tactical analysis) and physiological responses (i.e., blood lactate concentration [BLC], heart rate and/or oxygen consumption) during novice and elite male simulated and official amateur boxing competitions in any age category. The present review shows that boxing competition is a high-intensity intermittent striking combat sport. Typically, the activity-to-rest ratio was higher in elite (18:1) than novice (9:1) boxers and significant differences were observed between rounds (1 round=16:1, 2 round=8:1, and 3 round=6:1) in novice boxers...
January 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28080323/oral-adenosine-5-triphosphate-atp-administration-increases-postexercise-atp-levels-muscle-excitability-and-athletic-performance-following-a-repeated-sprint-bout
#6
Eduardo O De Souza, John A Rathmacher, Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jeremy M Partl, Jacob M Wilson, Ralf Jäger, Martin Purpura
OBJECTIVE: Oral adenosine-5'-triphosphate (ATP) administration has failed to increase plasma ATP levels; however, chronic supplementation with ATP has shown to increase power, strength, lean body mass, and blood flow in trained athletes. The purpose of this study was to investigate the effects of ATP supplementation on postexercise ATP levels and on muscle activation and excitability and power following a repeated sprint bout. METHODS: In a double-blind, placebo-controlled, randomized design, 42 healthy male individuals were given either 400 mg of ATP as disodium salt or placebo for 2 weeks prior to an exercise bout...
January 12, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28080077/dogs-canis-familiaris-attention-to-human-perception-influence-of-breed-groups-and-life-experiences
#7
Marianne T E Heberlein, Dennis C Turner, Marta B Manser
Attending to the perception of others may help individuals gaining information from conspecifics, or help in competitive situations. Dogs (Canis familiaris) are attentive to humans' signals and their attentional state. We investigated whether dogs of different breed groups differ in their ability to pay attention to human's perception, first according to the genetic relatedness between dog breeds, and second according to working style differences. Once dogs had learned to leave forbidden food on the floor, they were confronted with 2 food items to which only they had unrestricted visual access...
January 12, 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28079509/excellent-balance-skills-despite-active-and-inactive-juvenile-idiopathic-arthritis-unexpected-results-of-a-cross-sectional-study
#8
Josephine Merker, Matthias Hartmann, Florian Kreuzpointner, Ansgar Schwirtz, Johannes-Peter Haas
OBJECTIVES: Postural control (PC) is fundamental for human movements. Different factors, such as injuries or diseases, can adversely affect PC. The purpose of this study was to evaluate PC in juvenile idiopathic arthritis (JIA) patients with different disease activity levels in comparison to healthy peers. METHODS: JIA patients with active and inactive lower limb joints (n=36 each group) were examined. Both groups have been on medication and have had physiotherapy for at least 5 years...
January 5, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28076736/australian-institute-of-sport-and-australian-medical-association-position-statement-on-concussion-in-sport
#9
Lisa J Elkington, David C Hughes
Sport-related concussion is a growing health concern in Australia. Public concern is focused on the incidence and potential long term consequences of concussion. Children may be more prone to concussion and take longer to recover. The Australian Institute of Sport and the Australian Medical Association have collaborated to present the most contemporary evidence-based information in a format appropriate for all stakeholders. This position statement aims to ensure that participant safety and welfare is paramount when dealing with concussion in sport...
January 16, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28068954/cognitively-and-physically-demanding-exergaming-to-improve-executive-functions-of-children-with-attention-deficit-hyperactivity-disorder-a-randomised-clinical-trial
#10
Valentin Benzing, Mirko Schmidt
BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is one of the most common mental disorders observed in childhood and adolescence. Its key symptoms - reduced attention, poor control of impulses as well as increased motor activity - are associated with decreased executive functions performance, finally affecting academic achievement. Although drug treatments usually show some effect, alternative treatments are continually being sought, due to lack of commitment and possible side effects...
January 10, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28065995/opinions-of-sports-clinical-practice-chiropractors-with-sports-specialty-training-and-those-without-about-chiropractic-research-priorities-in-sports-health-care-a-centering-resonance-analysis
#11
Alexander D Lee, Kaitlyn Szabo, Kirstie McDowell, Sydney Granger
INTRODUCTION: A Canadian sports chiropractic research agenda has yet to be defined. The Delphi method can be utilized to achieve this purpose; however, the sample of experts who participate can influence the results. To better inform sample selection for future research agenda development, we set out to determine if differences in opinions about research priorities exist between chiropractors who have their sports specialty designation and those who do not. METHODS: Fifteen sports clinical practice chiropractors who have their sports fellowship designation and fifteen without, were interviewed with a set of standardized questions about sports chiropractic research priorities...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28056908/an-evaluation-of-outdoor-school-environments-to-promote-physical-activity-in-delhi-india
#12
Samiksha Tarun, Monika Arora, Tina Rawal, Sara E Benjamin Neelon
BACKGROUND: Increasing physical activity in children is an important public health goal in India. Schools may be a target for physical activity promotion, but little is known about outdoor school environments. The purpose of this study was to describe characteristics of the surrounding outdoor school environments that may promote children's physical activity in Delhi, India. METHODS: For this cross-sectional study, we conducted a structured observation of outdoor school environments in a random sample of 16 private schools in Delhi, India using the Sport, Physical activity and Eating behavior: Environmental Determinants in Young people (SPEEDY) audit tool...
January 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28054255/evaluation-of-resistance-training-to-improve-muscular-strength-and-body-composition-in-cancer-patients-undergoing-neoadjuvant-and-adjuvant-therapy-a-meta-analysis
#13
REVIEW
Camila S Padilha, Poliana Camila Marinello, Daniel A Galvão, Robert U Newton, Fernando H Borges, Fernando Frajacomo, Rafael Deminice
PURPOSE: Muscle atrophy and strength decline are two of the most prominent characteristics in cancer patients undergoing cancer therapy, leading to decreased functional ability and reduced quality of life. Therefore, the aim is to systematically review research evidence of the effects of resistance exercise (RE) on lower-limb muscular strength, lean body mass (LBM), and body fat (BF) in cancer patients undertaking neoadjuvant or adjuvant therapy. METHODS: This research was conducted using the following online database: Clinical Trial Register, Cochrane Trial Register, PubMed, SPORT Discus, and SciELO, from September 2014 until May 2015...
January 4, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/28051335/managing-the-training-load-in-adolescent-athletes
#14
Andrew Murray
While historically adolescents were removed from their parents to prepare to become warriors, this process repeats itself in modern times but with the outcome being athletic performance. This review considers the process of developing athletes and managing load against the backdrop of differing approaches of conserving and maximizing the talent available. It acknowledges the typical training 'dose' that adolescent athletes receive across a number of sports and the typical 'response' when it is excessive or not managed appropriately...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28051333/optimal-loading-for-maximising-power-during-sled-resisted-sprinting
#15
Matt R Cross, Matt Brughelli, Pierre Samozino, Scott R Brown, Jean-Benoit Morin
Purpose We sought to ascertain whether force-velocity-power relationships could be compiled from a battery of sled-resisted over-ground sprints, and to clarify and compare the optimal loading conditions for maximising power production for different athlete cohorts. Methods Recreational mixed-sport athletes (n=12) and sprinters (n=15) performed multiple trials of maximal sprints unloaded and towing a selection of sled masses (20-120% body-mass). Velocity data were collected by sports radar, and kinetics at peak velocity were quantified using friction coefficients and aerodynamic drag...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28051327/are-there-potential-safety-issues-concerning-the-safe-usage-of-electronic-personal-tracking-devices-the-experience-of-a-multi-sport-elite-club
#16
Daniel Medina, Eduard Pons, Antonio Gomez, Marc Guitart, Andres Martin, Jairo Vazquez-Guerrero, Ismael Camenforte, Berta Carles, Roger Font
Despite approval of the use of electronic personal tracking devices (EPTD) during competition by the International Football Association Board (IFAB), other team sport organizations and leagues have banned its use due to "safety concerns", with no evidence to support this assertion. The aim of the current brief report is to provide empirical evidence to support the wide-spread usage across all sports by examining safety issues concerning the use of EPTD in a multi-team sports club. A total of 5 outdoor football teams (first team, second team, under 19, under 18 and first team female) and 3 indoor multi-sport (basketball, futsal and handball) teams have been monitored; accounting for a total of 63...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28038317/risk-factors-for-lower-leg-ankle-and-foot-injuries-during-basic-military-training-in-the-maltese-armed-forces
#17
Matthew Psaila, Craig Ranson
OBJECTIVES: Basic military training is physically and psychologically demanding placing recruits at high risk of injury and premature discharge. This study aimed to identify risk factors for lower leg, ankle and foot injury in Maltese military recruits during basic training. DESIGN: This was a prospective cohort study. SETTING: An armed forces barracks. PARTICIPANTS: 127 recruits commencing one basic military training course agreed to participate in the study...
September 6, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28035585/effect-of-exercise-on-ovulation-a-systematic-review
#18
REVIEW
Osnat Hakimi, Luiz-Claudio Cameron
BACKGROUND: Infertility has been described as a devastating life crisis for couples, and has a particularly severe effect on women, in terms of anxiety and depression. Anovulation accounts for around 30% of female infertility, and while lifestyle factors such as physical activity are known to be important, the relationship between exercise and ovulation is multi-factorial and complex, and to date there are no clear recommendations concerning exercise regimes. OBJECTIVES: The objective of this review was to systematically assess the effect of physical activity on ovulation and to discuss the possible mechanisms by which exercise acts to modulate ovulation in reproductive-age women...
December 29, 2016: Sports Medicine
https://www.readbyqxmd.com/read/28035584/from-lab-to-real-world-heat-acclimation-considerations-for-elite-athletes
#19
Julia R Casadio, Andrew E Kilding, James D Cotter, Paul B Laursen
As major sporting events are often held in hot environments, increased interest in ways of optimally heat acclimating athletes to maximise performance has emerged. Heat acclimation involves repeated exercise sessions in hot conditions that induce physiological and thermoregulatory adaptations that attenuate heat-induced performance impairments. Current evidence-based guidelines for heat acclimation are clear, but the application of these recommendations is not always aligned with the time commitments and training priorities of elite athletes...
December 29, 2016: Sports Medicine
https://www.readbyqxmd.com/read/28031772/the-chronotype-of-elite-athletes
#20
Michele Lastella, Gregory D Roach, Shona L Halson, Charli Sargent
The aims of this study were (i) to compare the chronotype distribution of elite athletes to a young adult population and (ii) to determine if there was a tendency for athletes to select and/or participate in sports which suited their chronotype. A total of 114 elite athletes from five sports (cricket, cycling, hockey, soccer and triathlon) participated in this study. The participants' chronotype, sleepiness, sleep satisfaction and sleep quality were determined using the Horne and Östberg Morningness and Eveningness questionnaire, the Epworth Sleepiness Scale and questions concerning their sleep satisfaction and quality...
December 1, 2016: Journal of Human Kinetics
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